Description
Cummins 3921558 Engine Oil Cooler Core
It is a heat‑exchanger assembly that regulates engine oil temperature to protect bearings, pistons, turbochargers, and valvetrain components.
Application
– 4B3.9 / 6B5.9 / 6BT 5.9L (1989–2002 Dodge Ram)
– ISB 5.9L / ISB 6.7L
– ISBE4 / ISBE5.9
– ISC 8.3L / QSC 8.3
– QSB 5.9 / QSB 6.7
– Industrial, agricultural, and construction equipment using B‑Series engines
Refer to original manufacturer for any applicable warranties.
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